# US 12,119,685 B2 · Control device and electric power tool system

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- Number: US 12,119,685 B2
- Document ID: US12119685B2
- Status: Granted
- Kind: B2
- Application number: 17/838,154
- Filed: 2022-06-10
- Published: 2022-09-29
- Granted: 2024-10-15
- Earliest claimed: 2019-12-13
- Assignees: Positec Power Tools (Suzhou) Co., Ltd.
- Applicants: Positec Power Tools (Suzhou) Co., Ltd.
- Inventors: Harry Szommer; Warren Brown; Graham Gerhardt; Xiaoli Pang; Bing Liang; Jun Lu; Zhihan Yang
- Web page: https://patentgrep.com/patent/US12119685B2

## CPC

- H02J 7/62: against overcurrent
- B25F 5/02: Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)}
- H01M 10/482: {for several batteries or cells simultaneously or sequentially}
- H01M 10/486: {for measuring temperature}
- H01M 50/247: specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
- H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543)
- H02J 7/663: {using battery or load disconnect circuits (H02J9/002 takes precedence)}
- H02J 7/751: {concerning the insertion or the connection of the batteries}
- H02J 7/80: including monitoring or indicating arrangements
- A45D 20/08: heated electrically
- B23K 3/047: electric
- H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- B25F: COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR {(machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass B23P23/00 and subgroups)}
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM

## Abstract

A control device including a first shell; a battery pack mounting part; a first control unit, which is provided in the first shell and is used for cutting off power transmission from a battery pack to an electric power tool when the battery pack is abnormal; a first user operation unit, which is arranged on the first shell and is operated by a user to control the electric power tool; and a first interface, electrically connected to the first user operation unit. An electric power tool system comprises the control device and the electric power tool. The control device can be adapted to different types of electric power tools, and the control device is not provided with a control portion used for adjusting working parameter of the electric power tool, such that the control device can more flexibly match an upgraded new electric power tool.

## Claims

### Claim 1

An electric power tool system comprising:
a control device used for coupling an electric power tool to a battery pack, the control device being separate from the electric power tool and the battery pack,
wherein the control device comprises:
a shell configured to be connected to a battery pack mounting part of the battery pack,
a control unit provided in the shell and configured to:
control the battery pack to discharge energy stored therein,
recognize a type of the electric power tool,
select a working parameter matching a working component of the electric power tool, and
adjust the working parameter,
a user operation unit to control the electric power tool, and
an interface electrically connected to the user operation unit.

### Claim 2 (depends on 1)

The electric power tool system according to claim 1, wherein the user operation unit comprises a switch configured to permit or prohibit power transmission from the battery pack to the electric power tool.

### Claim 3 (depends on 2)

The electric power tool system according to claim 2, wherein:
the electric power tool system further comprises the electric power tool,
the shell is a first shell,
the control unit is a first control unit,
the interface is a first interface,
the electric power tool includes:
a second shell,
the working component,
a second control unit provided in the second shell and configured to control the working component, and
a second interface electrically connected to the second control unit, and
the second control unit controls the working parameter of the working component according to an internally stored preset control instruction.

### Claim 4 (depends on 3)

The electric power tool system according to claim 3, wherein:
the second control unit enables or disables the working component, and/or
the second control unit adjusts the working parameter of the working component.

### Claim 5 (depends on 1)

The electric power tool system according to claim 1, wherein the working component comprises a motor, an electric heating wire, or a resistance wire.

### Claim 6

An electric power tool system comprising:
an electric power tool; and
a control device coupling the electric power tool to a battery pack to provide electric power to the electric power tool,
wherein the control device comprises:
a first shell,
a first control unit provided in the first shell, the first shell configured to be connected to a battery pack mounting part of the battery pack,
a user operation unit to control the electric power tool, and
a first interface electrically connected to the user operation unit;
wherein the electric power tool comprises:
a second shell,
a working component,
a second control unit disposed in the second shell and configured to control the working component, and
a second interface electrically connected to the second control unit;
wherein the battery pack mounting part comprises a pair of guide rails, and the battery pack is able to slide along the pair of guide rails to be engaged or disengaged with the control device;
wherein the first interface is connected to the second interface via a cable, thus electrically connecting the electric power tool to the control device; and
wherein the second control unit is electrically connected to the user operation unit via the cable, is configured to obtain an operation on the user operation unit and controls the working component according to the user operation unit.

### Claim 7 (depends on 6)

The electric power tool system according to claim 6, wherein the user operation unit comprises an adjustment switch, and the second control unit detects an operation on the adjustment switch via the cable and generates an adjustment signal for adjusting a working parameter of the working component.

### Claim 8 (depends on 7)

The electric power tool system according to claim 7, wherein the cable comprises three wires, two of the three wires being conductor wires configured for power transmission from the battery pack to the electric power tool, and one of the three wires being a signal wire configured to electrically connect the second control unit to the adjustment switch.

### Claim 9 (depends on 7)

The electric power tool system according to claim 7, wherein the second control unit adjusts the working parameter of the working component according to the adjustment signal or controls the working component according to an internally stored preset control instruction.

### Claim 10 (depends on 7)

The electric power tool system according to claim 7,
wherein the second control unit controls the working parameter of the working component.

### Claim 11 (depends on 10)

The electric power tool system according to claim 10, wherein the second control unit controls an on and off configuration of the working component.

### Claim 12 (depends on 10)

The electric power tool system according to claim 10, wherein:
the adjustment signal is a first adjustment signal, and
the second control unit generates a second adjustment signal and selects one of the first adjustment signal and the second adjustment signal according to a preset priority to adjust the working parameter of the working component.

### Claim 13

A control device configured to selectively couple one of at least two types of electric power tools, each of the at least two types of electric power tools comprising a second control unit, the control device comprising:
a shell;
a battery pack mounting part on the shell, the battery pack mounting part comprising a pair of guide rails configured to be detachably connected to a battery pack such that the battery pack is slidable along the pair of guide rails, whereby the battery pack is engageable with the control device;
a control unit disposed in the shell and configured to detect at least one of parameters of a voltage, a current, and a temperature of the battery pack to determine a working state of the battery pack, and to cut off power transmission from the battery pack to an electric power tool when the battery pack is abnormal; and
an interface electrically connected to the electric power tool via a cable, the control device transmitting electric energy to the electric power tool via the interface,
wherein a respective electric power tool of the at least two types of electric power tools is configured to measure a value of a current flowing into a working component and to stop an output of the working component when a current value is greater than a predetermined current value.

### Claim 14

A control device configured to couple an electric power tool to a battery pack, the electric power tool comprising a working component and a first interface, wherein the control device comprises:
a shell;
a battery pack mounting part on the shell, the battery pack mounting part comprising a pair of guide rails configured to be detachably connected to the battery pack such that the battery pack is slidable along the pair of guide rails, whereby the battery pack is engageable with the control device;
a first control unit disposed in the shell and configured to detect at least one of parameters of a voltage, a current, and a temperature of the battery pack to determine a working state of the battery pack, and to cut off power transmission from the battery pack to the electric power tool when the battery pack is abnormal;
a user operation unit; and
a second interface electrically connected to the user operation unit, the second interface being connected to the first interface of the electric power tool, via a cable, such that the electric power tool is electrically connected to the control device to control the working component according to an operation on the user operation unit,
wherein the electric power tool further comprises a second control unit electrically connected to the user operation unit via the cable to obtain an operation on the user operation unit.

### Claim 15 (depends on 1)

The electric power tool system according to claim 1, wherein:
the electric power tool system further comprises the battery pack, and
the battery pack mounting part comprises a pair of guide rails such that the battery pack slides along the pair of guide rails to be engaged or disengaged with the control device.

### Claim 16 (depends on 3)

The electric power tool system according to claim 3, wherein the first interface is connected to the second interface via a cable, so that the electric power tool is electrically connected to the control device.